You just don't get it!

you just don't get it

You don't understand. The statement often refers to something that affects the speaker emotionally. A: "It stinks that you're injured right now, but there's always next year." B: "You just don't get it—so many scouts are coming out for the championship that it's a huge missed opportunity!"
See also: get, just
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

You just don't get it!

Inf. You really don't see what people are trying to tell you! (Also with subjects other than second person.) You just don't get it! People avoid you because you offend them.
See also: get, just
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
See also: